<HTML>
<BODY BGCOLOR="white">
<PRE>
<FONT color="green">001</FONT>    package metaface.client;<a name="line.1"></a>
<FONT color="green">002</FONT>    import java.awt.*;<a name="line.2"></a>
<FONT color="green">003</FONT>    import java.applet.*;<a name="line.3"></a>
<FONT color="green">004</FONT>    import javax.swing.*;<a name="line.4"></a>
<FONT color="green">005</FONT>    import java.awt.event.*;<a name="line.5"></a>
<FONT color="green">006</FONT>    import netscape.javascript.*;<a name="line.6"></a>
<FONT color="green">007</FONT>    /**<a name="line.7"></a>
<FONT color="green">008</FONT>     *  This class handles the instanciation of MetaFace in the browser by providing an Applet<a name="line.8"></a>
<FONT color="green">009</FONT>     *<a name="line.9"></a>
<FONT color="green">010</FONT>     *@author     Simon Beard <a name="line.10"></a>
<FONT color="green">011</FONT>     *@version    1.0<a name="line.11"></a>
<FONT color="green">012</FONT>     */<a name="line.12"></a>
<FONT color="green">013</FONT>    public abstract class MetaFaceApplet extends JApplet implements ActionListener {<a name="line.13"></a>
<FONT color="green">014</FONT>            /**<a name="line.14"></a>
<FONT color="green">015</FONT>             *  The window of the browser<a name="line.15"></a>
<FONT color="green">016</FONT>             */<a name="line.16"></a>
<FONT color="green">017</FONT>            private JSObject window;<a name="line.17"></a>
<FONT color="green">018</FONT>            /**<a name="line.18"></a>
<FONT color="green">019</FONT>             *  Applet base path<a name="line.19"></a>
<FONT color="green">020</FONT>             */<a name="line.20"></a>
<FONT color="green">021</FONT>            private String basePath;<a name="line.21"></a>
<FONT color="green">022</FONT>            /**<a name="line.22"></a>
<FONT color="green">023</FONT>             *  Current web page<a name="line.23"></a>
<FONT color="green">024</FONT>             */<a name="line.24"></a>
<FONT color="green">025</FONT>            private String currentWebPage;<a name="line.25"></a>
<FONT color="green">026</FONT>    <a name="line.26"></a>
<FONT color="green">027</FONT>    <a name="line.27"></a>
<FONT color="green">028</FONT>            /**<a name="line.28"></a>
<FONT color="green">029</FONT>             *  Initializes the applet MetaFaceApplet<a name="line.29"></a>
<FONT color="green">030</FONT>             */<a name="line.30"></a>
<FONT color="green">031</FONT>            public void init() {<a name="line.31"></a>
<FONT color="green">032</FONT>            }<a name="line.32"></a>
<FONT color="green">033</FONT>    <a name="line.33"></a>
<FONT color="green">034</FONT>    <a name="line.34"></a>
<FONT color="green">035</FONT>            /**<a name="line.35"></a>
<FONT color="green">036</FONT>             *  Sets the client attribute of the MetaFaceApplet object<a name="line.36"></a>
<FONT color="green">037</FONT>             *<a name="line.37"></a>
<FONT color="green">038</FONT>             *@param  mfc  The new client<a name="line.38"></a>
<FONT color="green">039</FONT>             */<a name="line.39"></a>
<FONT color="green">040</FONT>            public abstract void setClient(MetaFaceClient mfc);<a name="line.40"></a>
<FONT color="green">041</FONT>    <a name="line.41"></a>
<FONT color="green">042</FONT>    <a name="line.42"></a>
<FONT color="green">043</FONT>            /**<a name="line.43"></a>
<FONT color="green">044</FONT>             *  Start the applet<a name="line.44"></a>
<FONT color="green">045</FONT>             */<a name="line.45"></a>
<FONT color="green">046</FONT>            public void start() {<a name="line.46"></a>
<FONT color="green">047</FONT>            }<a name="line.47"></a>
<FONT color="green">048</FONT>    <a name="line.48"></a>
<FONT color="green">049</FONT>    <a name="line.49"></a>
<FONT color="green">050</FONT>            /**<a name="line.50"></a>
<FONT color="green">051</FONT>             *  Initialise components<a name="line.51"></a>
<FONT color="green">052</FONT>             */<a name="line.52"></a>
<FONT color="green">053</FONT>            private void initComponents() {<a name="line.53"></a>
<FONT color="green">054</FONT>                    setLayout(new java.awt.BorderLayout());<a name="line.54"></a>
<FONT color="green">055</FONT>                    setBackground(java.awt.Color.white);<a name="line.55"></a>
<FONT color="green">056</FONT>            }<a name="line.56"></a>
<FONT color="green">057</FONT>    <a name="line.57"></a>
<FONT color="green">058</FONT>    <a name="line.58"></a>
<FONT color="green">059</FONT>            /**<a name="line.59"></a>
<FONT color="green">060</FONT>             *  Web browser JavaScript methods call this to notify of updates to target frames<a name="line.60"></a>
<FONT color="green">061</FONT>             *<a name="line.61"></a>
<FONT color="green">062</FONT>             *@param  url     The URL currently displayed<a name="line.62"></a>
<FONT color="green">063</FONT>             *@param  target  The target frame<a name="line.63"></a>
<FONT color="green">064</FONT>             */<a name="line.64"></a>
<FONT color="green">065</FONT>            public abstract void updateWebPage(String url, String target);<a name="line.65"></a>
<FONT color="green">066</FONT>    }<a name="line.66"></a>
<FONT color="green">067</FONT>    <a name="line.67"></a>




























































</PRE>
</BODY>
</HTML>
